Leaders of Italian city-states had to keep a good relationship with other leaders of neighboring city-states. What did Italians develop to deal with other city-states?

they were byzantines

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

b. the passage of the equal rights amendment  

explanation:

this mean that anything that someone else could do they could do

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.